6 #include "walk_statements.h"
9 static void walk_expression(expression_t const *const expr,
10 statement_callback const callback, void *const env)
12 switch (expr->base.kind) {
14 walk_statements(expr->statement.statement, callback, env);
18 walk_expression(expr->binary.left, callback, env);
19 walk_expression(expr->binary.right, callback, env);
22 EXPR_UNARY_CASES_OPTIONAL
23 if (expr->unary.value == NULL)
26 EXPR_UNARY_CASES_MANDATORY
27 walk_expression(expr->unary.value, callback, env);
31 for (call_argument_t *arg = expr->call.arguments; arg != NULL;
33 walk_expression(arg->expression, callback, env);
38 panic("unexpected expr kind");
40 case EXPR_COMPOUND_LITERAL:
44 case EXPR_CONDITIONAL:
45 walk_expression(expr->conditional.condition, callback, env);
46 /* may be NULL because of gnu extension */
47 if (expr->conditional.true_expression != NULL)
48 walk_expression(expr->conditional.true_expression, callback, env);
49 walk_expression(expr->conditional.false_expression, callback, env);
52 case EXPR_BUILTIN_CONSTANT_P:
53 walk_expression(expr->builtin_constant.value, callback, env);
57 walk_expression(expr->select.compound, callback, env);
60 case EXPR_ARRAY_ACCESS:
61 walk_expression(expr->array_access.array_ref, callback, env);
62 walk_expression(expr->array_access.index, callback, env);
65 case EXPR_CLASSIFY_TYPE:
66 walk_expression(expr->classify_type.type_expression, callback, env);
71 expression_t *tp_expression = expr->typeprop.tp_expression;
72 if (tp_expression != NULL) {
73 walk_expression(tp_expression, callback, env);
81 case EXPR_REFERENCE_ENUM_VALUE:
83 case EXPR_CHARACTER_CONSTANT:
84 case EXPR_WIDE_CHARACTER_CONSTANT:
85 case EXPR_STRING_LITERAL:
86 case EXPR_WIDE_STRING_LITERAL:
88 case EXPR_BUILTIN_SYMBOL:
91 case EXPR_LABEL_ADDRESS:
92 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
96 /* TODO FIXME: implement all the missing expressions here */
99 static void walk_initializer(const initializer_t *initializer,
100 statement_callback callback,
103 switch(initializer->kind) {
104 case INITIALIZER_VALUE:
105 walk_expression(initializer->value.value, callback, env);
108 /* FIXME: should walk initializer hierarchies... */
113 static void walk_declarations(const entity_t* entity,
114 const entity_t* const last,
115 statement_callback const callback,
118 entity_t const *const end = last != NULL ? last->base.next : NULL;
119 for (; entity != end; entity = entity->base.next) {
120 /* we only look at variables */
121 if (entity->kind != ENTITY_VARIABLE)
124 const variable_t *variable = &entity->variable;
125 const initializer_t *initializer = variable->initializer;
126 if (initializer != NULL) {
127 walk_initializer(initializer, callback, env);
133 void walk_statements(statement_t *const stmt, statement_callback const callback, void *const env)
137 switch (stmt->kind) {
138 case STATEMENT_COMPOUND:
139 for (statement_t *s = stmt->compound.statements; s != NULL; s = s->base.next) {
140 walk_statements(s, callback, env);
145 walk_declarations(stmt->fors.scope.entities, NULL, callback, env);
146 if (stmt->fors.initialisation != NULL)
147 walk_expression(stmt->fors.initialisation, callback, env);
148 if (stmt->fors.condition != NULL)
149 walk_expression(stmt->fors.condition, callback, env);
150 if (stmt->fors.step != NULL)
151 walk_expression(stmt->fors.step, callback, env);
152 walk_statements(stmt->fors.body, callback, env);
156 walk_expression(stmt->ifs.condition, callback, env);
157 walk_statements(stmt->ifs.true_statement, callback, env);
158 if (stmt->ifs.false_statement != NULL)
159 walk_statements(stmt->ifs.false_statement, callback, env);
162 case STATEMENT_SWITCH:
163 walk_expression(stmt->switchs.expression, callback, env);
164 walk_statements(stmt->switchs.body, callback, env);
167 case STATEMENT_LABEL:
168 walk_statements(stmt->label.statement, callback, env);
171 case STATEMENT_CASE_LABEL:
172 walk_statements(stmt->case_label.statement, callback, env);
175 case STATEMENT_WHILE:
176 walk_expression(stmt->whiles.condition, callback, env);
177 walk_statements(stmt->whiles.body, callback, env);
180 case STATEMENT_DO_WHILE:
181 walk_statements(stmt->do_while.body, callback, env);
182 walk_expression(stmt->do_while.condition, callback, env);
185 case STATEMENT_EXPRESSION:
186 walk_expression(stmt->expression.expression, callback, env);
189 case STATEMENT_RETURN:
190 if (stmt->returns.value != NULL)
191 walk_expression(stmt->returns.value, callback, env);
194 case STATEMENT_DECLARATION:
195 walk_declarations(stmt->declaration.declarations_begin,
196 stmt->declaration.declarations_end, callback, env);
199 case STATEMENT_MS_TRY:
200 walk_statements(stmt->ms_try.try_statement, callback, env);
201 walk_statements(stmt->ms_try.final_statement, callback, env);
204 case STATEMENT_INVALID:
205 case STATEMENT_EMPTY:
206 case STATEMENT_CONTINUE:
207 case STATEMENT_BREAK:
210 case STATEMENT_LEAVE:
214 panic("unhandled statement");